This is a tachi by Ayanokouji Sadatoshi from the Kamakura period. It features a deep sori and small kissaki, with a hamon of small gunome and small chouji. This tachi is a rare example of ubu-nakago and was passed down in the Nasu family.
mei · Ayanokouji · Kamakura · nagasa 76.8cm · sori 2.6cm

Yamashiro-den · Yamashiro
9 pieces on the market now
The Ayanokoji school (綾小路) takes its name from the swordsmiths who lived along Ayanokoji street in the Shijo quarter of Kyoto, and the published sources count it, with Awataguchi and Rai, among the three lineages of Yamashiro-den smiths of the Kamakura period. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Sadatoshi定利 | 1232-1233 | 42 |
| Sueyuki末行 | 1303-1306 | 3 |
| Sadanari定業 | 1278-1288 | 0 |
| Sadanori定則 | 1299-1302 | 0 |
| Kuninobu國信 | 1334-1338 | 0 |
A blade of top-grade workmanship and condition, formally judged to rank with a nationally recognized Important Art Object (Jūyō Bijutsuhin). Awarded only at the NBTHK’s competitive annual examination.
Of Japan’s roughly 2.5 million registered swords, only 12,307 (about 1 in 203) have ever attained Jūyō.
The NBTHK (Nihon Bijutsu Tōken Hozon Kyōkai, the Society for the Preservation of Japanese Art Swords) is a public-interest incorporated foundation founded in 1948 and supervised by Japan’s Agency for Cultural Affairs (Bunkachō); it is based at the Japanese Sword Museum in Tokyo. Its expert panels physically examine each submitted work (shinsa) and issue a certificate (kanteishō) ranking it by artistic and historical merit. NBTHK papers are the most widely recognized standard of authentication for Japanese swords and fittings.
NBTHK official siteReturns/exchanges/cancellations not accepted after shipment except for significant defects; if defective, return/exchange possible within 3 days of arrival (return shipping paid by customer).
This is a tachi by Ayanokouji Sadatoshi from the Kamakura period. It features a deep sori and small kissaki, with a hamon of small gunome and small chouji. This tachi is a rare example of ubu-nakago and was passed down in the Nasu family.
mei · Ayanokouji · Kamakura · nagasa 76.8cm · sori 2.6cm

Yamashiro-den · Yamashiro
9 pieces on the market now
The Ayanokoji school (綾小路) takes its name from the swordsmiths who lived along Ayanokoji street in the Shijo quarter of Kyoto, and the published sources count it, with Awataguchi and Rai, among the three lineages of Yamashiro-den smiths of the Kamakura period. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Sadatoshi定利 | 1232-1233 | 42 |
| Sueyuki末行 | 1303-1306 | 3 |
| Sadanari定業 | 1278-1288 | 0 |
| Sadanori定則 | 1299-1302 | 0 |
| Kuninobu國信 | 1334-1338 | 0 |
A blade of top-grade workmanship and condition, formally judged to rank with a nationally recognized Important Art Object (Jūyō Bijutsuhin). Awarded only at the NBTHK’s competitive annual examination.
Of Japan’s roughly 2.5 million registered swords, only 12,307 (about 1 in 203) have ever attained Jūyō.
The NBTHK (Nihon Bijutsu Tōken Hozon Kyōkai, the Society for the Preservation of Japanese Art Swords) is a public-interest incorporated foundation founded in 1948 and supervised by Japan’s Agency for Cultural Affairs (Bunkachō); it is based at the Japanese Sword Museum in Tokyo. Its expert panels physically examine each submitted work (shinsa) and issue a certificate (kanteishō) ranking it by artistic and historical merit. NBTHK papers are the most widely recognized standard of authentication for Japanese swords and fittings.
NBTHK official siteReturns/exchanges/cancellations not accepted after shipment except for significant defects; if defective, return/exchange possible within 3 days of arrival (return shipping paid by customer).